915706-60-4Relevant academic research and scientific papers
FLUORESCENT XANTHENES AND WHITE LIGHT FLUOROPHORES
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, (2010/11/29)
Xanthene compounds are disclosed having fluorescence at multiple wavelengths. Also disclosed are methods for their synthesis and use. Some of the compounds fluoresce at three wavelengths, emitting white light. Uses include the imaging of biological tissues, illumination, and display technologies. Many of the compounds have large Stokes shifts, and are resistant to photobleaching. The fluorescence may be readily distinguished from that of endogenous fluorophores, and from that of most existing, commercially-available fluorescent probes. The compounds are well suited for use in "multiplexing" techniques. They exhibit clear isosbestic and isoemissive points, and have broad absorption and emission ranges.
An organic white light-emitting fluorophore
Yang, Youjun,Lowry, Mark,Schowalter, Corin M.,Fakayode, Sayo O.,Escobedo, Jorge O.,Xu, Xiangyang,Zhang, Huating,Jensen, Timothy J.,Fronczek, Frank R.,Warner, Isiah M.,Strongin, Robert M.
, p. 14081 - 14092 (2008/02/10)
The synthesis of new benzo[a]- and [b]xanthene dye frameworks is described. A unique benzo[a]xanthene, seminaphtho[a]fluorone (SNAFR-1), is studied in a variety of media. The optimization of solution parameters and excitation wavelengths allows SNAFR-1 to display red, green, and blue emission bands of approximately equal intensities and also to produce white light. Ratiometric red (anion) and green (neutral) emissions are observed upon varying solution pH. A pH-independent violet-blue emission band is due to the addition of nucleophiles to the benzylic carbon of SNAFR-1.
